In this Java 101 tutorial, I’ve explained how interfaces differ from classes, and showed you how to declare, implement, and extend interfaces in your Java programs.

That’s all you really need to know about the java.util.function.Function interface. It is a very simple component that simply requires the implementation of one method — named apply — that is passed ...

When it is not reasonable to implement JTA compliant interfaces for these resources, a reasonable alternative is to interact with them in a pseudo-transaction. Although this is not as robust and ...

For an introduction to Java interfaces, ... Note that static member class EnclosedClass1, non-static member class EnclosedClass2, and local class EnclosedClass3 implement both nested interfaces.